Two-cylinder engine.



H. KL-EINBRAHM.

' TWO CYLINDER ENGINE. APPLICATION FILED AUG.6, 1914.

L1 N Patented June 22, 1915..

2 SHEETS-SHEET 1- ZKWWN THE NORRIS PETERS CO.. PHOTCJJTHO, WASHINGTON, DC.

H. KLEINBRAHM.

TWO CYLINDER ENGINE. APPLICATION-FILED AUG. 6. 1914. I

Patented June 22, 1915.

I I l l I lll THE NORRIS PETERS 60., PHDTO-LITHQ, WASHINGTONTWO-CYLINDER ENGINE.

Application filed August 6,

To all whom it may concern Be it known that I, HERMANN KLEIN BRAl-IM, asubject of the German Emperor, residing at 12 Vereinsstrasse,Miilheim-onthe-Ruhr, Germany, manufacturer, have invented certain newand useful Improvements in Two cylinder Engines, of which the followingis a statement.

The present invention relates to a twocylinder engine, which may bedriven by compressed air, water, steam or the like.

The design of the engine, and in particular the controlling gear isextremely simple, and the engine may be employed for either oscillatinga shaft or for continuously rotating a shaft in the same direction.

In the accompanying drawing Figure 1 shows the engine, partly inlongitudinal section, partly in elevation. Fig. 2 is a top view. Fig. 3is an end view, Fig. 4 is a cross section and Fig. 5 shows the enginefitted to a washing machine.

The two cylinders 1 and 2 of the engine are coaXially arranged behindeach other and are divided from each other by a partition 3 which, ifdesired, may also be hollow. In this partition wall are arranged twovalves 4 and 5. Of these the former communicates with the supply 6 forthe pressure medium, which may be throttled or closed by means of avalve or the like, while the other valve communicates with the can haust7. Both valves have each two seats and the valve body 12 of the valve 4has two jointing surfaces 8 and 9, the valve body of valve 5 two cones10 and 11. The valve body 12 is disposed in the middle of a ribbed body,whereas the cones 10, 11 are disposed at the ends of a ribbed body 14.In the engine cylinders are fitted two suitably packed plungers 15 and16, which are coupled with each other by means of coupling rods 17, 17*,18 and cross pieces 33. At their ends turned toward the partition theplungers are fitted with disks 20 and 21 respectively, which aresupported by springs 19. These disks are used for controlling the valvesat the two sides of the partition. When, for example, the pressuremedium is acting on the plunger 16 and forces the same toward outside,the plunger 15 approaches the partition 3 and, before it has reached itsterminal position, its disk 20 will push the two valve bodies 4 and 5 tothe other side, so that the seat 8 of the valve 4 is opened, and theseat 9 is closed. At the same time Specification of Letters Patent.

Patented June 22, 1915.

1914. Serial No. 255,390.

the seat 10 of valve 5 is closed and seat 11 is opened. The consequenceis that the operat1on of the engine is reversed, the pressure medlum nowentering into the cylinder 1, while the charge in the cylinder 2 escapesfrom the latter through the valve seat 11. VYhen the plungers havereached the opposite position, the valve bodies are moved in theopposite sense. The coupling rod connecting the two plungers or one ofthese coupling rods is made in form of a rack 22 and engages a pinion 23which is fitted to a shaft 24,- for example the shaft of the agitator ofa washing machine, and thereby the pinion and the shaft will beoscillated. On the shaft 24 is also fitted a toothed disk 25 and twopawls 26, 27 of opposite sense fitted to one of the coupling rods engagein this disk or ratchet wheel 25, and alter nately rotate the shaft 24,to which a flywheel may be fitted, but in the same sense. Both pinion 23and ratchet wheel 25 are fitted loose on the shaft 24, but may beindependently coupled therewith by means of clutches 28 and 29respectively, so that they cannot be operated without carrying the shaftwith them, when coupled thereto. The shaft 24 is displaceably arranged,and may be raised or lowered by means of a handle 30. On this shaft arefitted the clutch members 28 and 29 When, now, the shaft 24 is raised,the clutch member 28 is engaged with the clutch teeth of the pinion 23and the shaft 24 will be driven by the motion of said pinion. When, onthe contrary, the shaft 24 is lowered, the clutch member 29 engages inthe clutch teeth of ratchet wheel 25 and the shaft 24 is revolved by thelatter. The shaft is secured in its raised or lowered positionrespectively by means of a bolt 32 which may be engaged in grooves 31 inthe shaft 24.

The hereinbefore described design of the engine has the advantage, thatno stuffing boxes or similar packing means are required. This is ofimportance, as engines of this kind work at comparatively smallpressures and therefore it is necessary, that not too much power be lostby friction.

I claim:

In an engine, the combination of two coaxially disposed cylinders, witha dividing partition, plungers engaging the cylinders, means forcoupling the plungers, two double valves in the partition, one of saidvalves communicating with a pressure medium supply and the other valvecommunicating the shaft, and means for coupling the ratchet 10 with anexhaust, elastic means on the plun- Wheel to the shaft.

gers for controlling the valves, a rack and In testimony whereof I havehereunto set paul llsfoperatively c(1 nnec1ted to the plungeis, my handin the presence of two Witnesses.

a s a t, a pinion oosey mounted on t e shaft and adapted to be engagedby the rack, HERMANN KLEILBRAHM' a ratchet Wheel likewise looselymounted on Witnesses:

the shaft and adapted to be engaged by the HELEN NUFER,

paWls, means for coupling the pinion to ALBERT NUFER.

Copietot this patent may be obtained for five cents each, by addressingthe Commissioner of l'atenta Washington, D. G."

